Welcome to the website for the Ultrafast Fiber Lasers and Nonlinear Optics group, led by Professor Khanh Kieu, part of the Photonics Thrust at the College of Optical Sciences.

In this group, we design, make, and use compact ultrafast fiber lasers for multiphoton microscopy, dual-comb spectroscopy, and more. We are particularly interested in directions involving optical fiber technologies such as fiber lasers, fiber optical sensors, nonlinear effects and devices in waveguiding structures. The goal is to develop new advanced components and instruments that help enable new scientific discoveries and enhance education.

Our multiphoton microscopes have been used to image pancreatic cancer, esophageal cancer, galium selenide, molybdenum di-sulfide, graphene, and more. This varied project involves optical system design, software creation, and the design of experiments. The multiphoton uses nonlinear optics to image samples, creating beautiful and useful 3D images. We have collaborated with groups from around the world, from the U of A’s own Cancer Center, to the University of Eastern Finland.

On this website, you can learn more about our research, recent publications, group members, or Dr. Kieu’s courses. Click the images below to learn more about our work on that topic.